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[Analysis Case] Cross-Section Observation of Organic Thin-Film Solar Cells

Using low acceleration voltage STEM, slight density differences in organic films can be observed.

In bulk heterojunction solar cells using mixed films of p-type and n-type materials, it is necessary to appropriately control the mixing state of the materials within the film for high efficiency. In films with low density (such as organic films), it is difficult to achieve contrast using a dedicated TEM machine at high acceleration voltages (several hundred kV) due to the high transmission of the electron beam. On the other hand, in STEM imaging at low acceleration voltages, where slight differences in density are reflected, the mixing state within the film can be clearly observed.

Related Link - https://www.mst.or.jp/casestudy/tabid/1318/pdid/31…

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Analysis of solar cells.

[Analysis Case] Cross-Section Observation of Organic Thin-Film Solar Cells_C0125

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